right click on Avast blue ball, select "On Access protection Control", Select then "Standard Shield" . I have then High - to see the detailled settings click on customize - then You have a lot of tabs - take a look at them.
My settings are : Protection High
in Scanner (Basic) : all checked
in Scanner (Advanced) :
Scan files on Open - checked
Always scan WSH-Scrip files - checked
Scan Created/modified Files - checked
All Files - checked
br
Peter